MasterBox NR400 Micro-ATX PC Case Tower, Minimal Design, Airflow Mesh Front Panel, 240mm Water-Cooling Support, Tempered Glass, Single Headset Jack (MCB-NR400-KG5N-S00)

This is just really a stupendous MATX case that has every feature i've been searching forever for and have never found till now. For some reason, it's nearly impossible to find every feature I want in a MATX case... I can find them all in bigger cases, but not MATX... I've found MATX cases that have some, but not all the features... until now... here's what this case features that I have always sought but couldn't find until the NR400 was released: 1) Budget priced (under $100)... check 2) Good Cable Management... check 3) Unobstructed good airflow... check 4) A PSU shroud/basement... check 5) A tempered glass window, not acrylic... check 6) Mounting points for 2.5", 3.5" and a single 5.25" drive... check I can't think of (or I haven't found) a single MATX case that had all 6 of those things in one case till the NR400 came out. The last one was also important to me, as yes, I'm one of those people who still use an Optical Drive, as I have a large collection of family photos on DVD, old games on DVD I still like to load up from time to time, and I like to do some DVD burning of various projects... for those that don't need an optical drive, I totally understand, but there are tons of nice MATX cases to choose from that don't have an ODD bay, and so few with a bay that have other nice modern features. Anyways, i'm rambling... on with the review... The build quality is really nice for $59... I love everything about this case... if there are any complaints about quality, i'd give a slight mention to the back panel of the case being a tad flimsy, but this is more due to its extreme perforations for airflow and the lack of an I/O shield being there for support when you take it out of the box... once your build is complete, this stiffens up. The only other thing I don't like about the quality is the bottom PSU intake filter... it's kinda lame... just a cut plastic sheet that bends into place... i would have preferred something a little more "pull-out, push-in" like on other cases, but at $59, if this is the only grumble, it's forgivable and not enough to deduct a star. Airflow on this case is just awesome... there are far too many cases with terrible airflow... solid front panels or perforated panels that are far more metal than air (I'm looking at you MasterBox Q300L) that turn your PC into an oven. The NR400 has none of those problems... as with any case, I immediately tossed-out the stock fans and replaced them with three upHere 120mm fans... two up-front as intakes and one in the rear for exhaust... although there's nothing wrong with this setup, I wanted more and realized I could have more... so I upgraded my two front fans from a pair of 120mm fans to a pair of 140mm fans (also upHere). This really kicked up the airflow quite a bit (and is what you see in my pictures... the pair of 140mm fans up-front). This is a Haswell Core i7-4790 build using only air cooling (A CM Hyper 212 Black Edition), and at idle, i'm running 25-27 Celsius... under load in games, my CPU is usually in the mid 40s to low 50s tops. My GPU (a GTX 1660Ti) is anywhere from low 50s to about 62 tops, depending on the game and what's going on. This case just stays really cool with air cooling alone. Other features... cable management is easy with this case... it's easy to keep the viewable front of the case clean, as there's plenty of storage are in the back to hide your cables... there's four dedicated 2.5" bays, which have a unique "rubber gasket and insertable pin" arrangement to attach your SSDs to. Simply screw in four pins (included with the case) to the bottom of your SSD, and push into the gasket... it's held on with friction, stays in place, but easy to remove (see pics). Also, there's a removable and repositionable 3.5" bay under the PSU shroud... the bigger NR600, it's riveted in place, but on the NR400 you can move it or remove it, it's up to you. As previously mentioned, there is a single 5.25" bay which is rare in a case like this, and I'm happy to have it in a case this nice. If you don't want/need the bay, it is also removable to clean up your build. I really love this case... as it just came out in 2019, it was not available the last time I upgraded my case for this build. I did have my system in a Fractal Design Focus G Mini (another case I really liked, but not as perfect as this one)... however, I liked the features in this case so much, I went ahead and got it to switch my parts over to this case... it's that awesome, and i'm glad I did it. This is really a great case for the price. 5-Stars! Update 2022: yes, it fits an EVGA FTW3 3070Ti as well... pictures updated.

Great MicroATX case at a great price, I've had it a year and still very happy with it. This is an ideal case if you want great airflow in a compact case at a reasonable price. - Good quality, everything fits together well, tight tolerances, no weird gaps, didn't notice any sharp edges. - Attractive, minimalist design. Looks at home as a gamer PC or office PC. - Pretty compact for a MicroATX (many others I looked at were wider, taller, or both). - Great airflow, nice mesh design acts as a filter, easy to wipe off with a soft cloth. - Plenty of room for fans. I've outfitted mine with 2 140mm intake fans up front, 1 120mm exhaust in back, and a single 140mm and 120mm on a top-mounted AIO. - Intel 12600K CPU sees 64°C max temp with a slight OC to 5.1GHz, all power limits disabled, in Prime 95 Small FFTs for over 30-minutes. - Asus nVidia RTX 3070 Strix GPU, a 2.9-slot wide card, stays in the mid-60s range while gaming. - 5.25" bay, nice for those who can use it. I don't have an ODD, but I wanted a case with the bay to put a sensor panel. There are no holes on top of the PSU basement, but a nearly 3-slot GPU can breathe just fine in the case. A 4-slot GPU might have a more difficult time with airflow. The top has room for 2 140mm fans. The case officially supports a 240mm AIO up top. I put a 280mm AIO there (not officially supported), but had to use a 120mm fan on one side to clear the motherboard VRM. Using the 5.25" bay will prevent use of a top-mounted AIO or a 2nd case fan up top. I got around that limitation by 3D printing a custom shallow-mount bracket for my sensor panel display. Up to a 280mm AIO can also fit up front, but may prevent orienting the tubes in the preferred tubes-down orientation. 360mm AIO up front is not officially supported, but there's enough room and I've seen people pull it off with minor modding, but that would require giving up the 5.25" bay. It comes with a single 120mm exhaust fan. I didn't use this fan so I can't attest to how well it works. Only real drawback I can think of for this case, is it's so open, you can hear all the fans quite well. If you use noisy fans, you will hear them. Choose fans wisely, if you care about noise. Nothing specific to this case, it's the nature of open mesh-style cases.

The case looks nice and has great air flow, and it's fairly easy to maneuver cables in despite its size. However, the standoffs in my case were ridiculously hard to take out of their slots. I had to use a pair of pliers to get them out, and I ended up scratching the case a little bit. Once they're out though, they're pretty easy to get into other slots. Though, I may have used a bit too much force getting them out, and the ones I moved didn't play too nice when I had to unscrew my motherboard. Also, the locking mechanism for the CD drive isn't great, and it felt out a few times while trying to put the drive in. Aside from these though, it does what it needs to and looks great doing it.

I was using an old case from 2003 with modern parts. Low airflow and aged front IO finally started to become an issue with new components, so it was time to upgrade. After doing research, this case seemed to have the best set of features & look for the price point I was at. Pros: great look, 5.25 optical drive cage is nice and compact, lots of tie-down points, nice modern features, fantastic cooling, subtle & clean white power LED and no RGB vomit, price. The 2/3 tempered glass door is a great design. Cons: Two big areas for improvement: The two SSD spaces that sit on top of the PSU shroud could be closer. I had to skip a SATA power plug on my 3x sata power plug, making for awkward cable management. Also, my sata plugs are L-shaped and they bang into the shroud, lifting the SSDs up a little. Definitely will need to get straight cables. Secondly, packing cables around the drive cage under the shroud was a mess. It's nice that the drive cage is removeable, but also: if it wasn't removeable it would have been darn near impossible lol. Would have been helpful if the shroud was removable but I wonder if the 2/3 door design would have worked... Also, the front window is a little tight up against my gpu power cables. Other: even though this is an ITX/MATX case, my ITX board looks like it's swimming in there. Cable management might actually have been easier with a matx board. I also swapped out the front fan for 2 This may look like a lot of negative feedback, but just consider it constructive criticism. It's the nicest case I've ever owned for looks & function.

This is my second Cooler Master build, this time using the NR400. My last build was the NR200, and I've been very happy with that. This case shows similar high build quality and user friendliness, if you ignore the "instructions," which consist of a series of unhelpful "illustrations." Seriously, if you've never done this before, don't look to the instructions for how to do things. Watch some YouTube build videos instead. I bought this case as a replacement case for an older ASUS X58 system, which resided in a larger, bulkier, low airflow case. In the NR400 there is lots of room for everything, great cable management, super air flow and cooling. I replaced the two cheap supplied fans (Molex power, fixed fan speed) with decent Noctuas. It's hard to find a good mATX case with a drive bay for an optical drive. This case targets that need with good design and quality materials. It looks a lot better than the photographs, really quite a nice case with a good level of fit and finish. I'm very happy with how the build turned out.

Assembly in the NR400 has been one of the most pleasant PC building experiences I have had. I've assembled several PCs in Cooler Master Cases (Storm Scout, HAF 912 and most recently QUBE540), Antec, Fractal Design and Lian Li cases. The build quality is good, there's ample room for cable management and it can house a DVD Drive There is a standoff "Key" (which you use w/a screwdriver to install or remove the motherboard standoffs) and reusable PCI Slot Covers. I didn't use either of the included two fans nor did I install a Discrete Graphics card. Front Fan 200031171GP Rear Fan 202001180GP 2 x 120 MM or 2 X 140 MM Fans may be installed in the front panel area either in front of the frame or the back side of the frame. Plan build accordingly CPU: Ryzen 5 5600 GT CPU Cooler: Noctua NH-U12S Redux Motherboard: Asrock A520 Phantom Gaming 4 Memory: Corsair 2x16 2666MHz Graphics: Radeon Vega 7 (on board) Drives: Samsung 970 EVO Plus (OS), BluRay DVD Drive, WD 1 TB Black 3.5 Power: Corsair CX650M Case Fans: 3 x Thermalright TL-S12 Idle Temps 34 Load 64 A diagnostic motherboard speaker or side screws for the Optical Drive are not included (but not worth docking a star for) I wish I had bought a second as at the time of this writing it was 85 USD

So you buy a pre-built and decide it could use an upgrade. It already has a fast ssd so what's the next best upgrade? That's right, ram. However your OEM mobo has no memory controls and so your brand new flashy ram is nerfed. So you decide that a motherboard upgrade was inevitable anyway and you order one. It turns out the OEM power supply has only a 4 pin power connector and the new motherboard wants an 8 pin. It may work but in limp mode and, again, defeating the entire purpose of the upgrade. SO, you order a power supply. Non-Modular of course because this is getting out of hand. Finally it's all here and you put it in and you manage the wires as best you can (read as crammed them wherever they would fit because got heads to click). Turns out your temps are somewhere around equatorial Hades. So after ebaying some prized possessions to get the better half off your back and out of your ears you order this case. I got the one with an optical drive because I still burn CD's to listen to in the car. Listening to MP3's is like using sandpaper q-tips. Looks great. Everything installed easily. Cable management is actually useful and you shouldn't have to force that back panel on with a crow bar anymore. I suppose my only nag is that the way the front panel acts as a filter you'll constantly be wiping away the dust circles your fans make on the screen. Definitely add a second fan up front if you're not mounting a radiator there. Temps are 15-20c lower thanks to air being able to, you know, go into and out of the case now. Great case all around and amazing for the price.

This is a decent case, but 1 of my front usb ports doesn't work at all. The build is finished, so my choices are to disassemble and go through the replacement process or just leave it as is. 1 port isn't a deal breaker and it's not worth the time of not having a system. The included fans are decent and quiet. Side panel screws stay on the panels when loosened. The front isn't overkill with mesh and dust filters, it's just a minimal dust screen which allows pretty good airflow. This is the only affordable tempered glass side panel case I could find with a front optical bay, so it has that going for it also. There's not a lot of options in regards to cable management on the back side, having a modular power supply helps with reducing clutter when building with this case. The hdd bay is flimsy and the screwless design holds hard drives pretty loose compared to other cases I have used. Other than the non-functional usb port this is a great case. Luck of the draw I guess.

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Fue la mejor opción almacenamiento-precio que encontré, además de que se agradece enormemente que tenga espacio para unidades ópticas, algo muy difícil de conseguir hoy en día. El diseño pudiera parecer simple, pero ya colocado en su lugar, le da un aspecto minimalista y elegante Por default trae espacio para 4 discos duros de 3.5", aunque pude colocar un quinto disco duro (al hacer esto se debe manipular con cuidado el gabinete). El espacio para manipular los cables está genial, te permite hacer una instalación limpia. El panel frontal tiene un diseño que oculta una parte de los ventiladores de 120mm; no es algo que afecto o incomode, pero lo menciono para los consumidores muy detallistas. La malla no impide disfrutar de los ventiladores led.

great value for money

I had previously built a PC back in 2013 with a case of a similar price, and this case is better in every conceivable way. - The materials are top notch, no sharp metal edges or anything. Very premium. - It seems like they actually really thought about where cables would be going and designed the case around that, resulting in a very intuitive building experience. - I like the rubber gaskets around where the power cables come through, which I've seen other cases don't have. - Comes with screws and zipties, though if you want to go hard in the paint of cable management you should buy more zipties. - A lot of options for fan placement, I went just with the standard 2 120mm in front and 1 in the back (though I'd say the optimal setup would be 2 140mm fans in front, 1 120mm on the back and 1 120mm on the top). Never tried the fans that came with the case tbh, so can't tell you what they're like. - I have a 1650 super and it fits easily - The cat did not static shock the system If you like the simple look of the case, I say buy it. You will have no problems at all. I don't see any reason why you would spend any more money on a case.

Nada complicado. Montaje fácil y espacioso para armar una buena máquina. La ventilación es excelente. Gran valor por tu dinero definitivamente. Recomiendo ampliamente un radiador de 280 y 4 ventiladores arctic p14 para este case.